We live in a digital era where programmable electronic devices are widely available and form part of our daily routines. One such device: the Raspberry Pi (Raspberry Pi Foundation, UK), is a small, inexpensive, mini-computer developed to foster learning in computer programming. Since inception, the Raspberry Pi has been popular with hobbyists, but these increasingly accessible (cost effective), compact mini-computers are being adopted by ecologists to remotely collect a range of environmental data. However, most ecological applications have been used for terrestrial, rather than aquatic systems. We are currently testing the feasibility of utilizing Raspberry Pi technology for underwater monitoring, together with involvement of citizen scientists to help construct, deploy and maintain installed units. Our trial application is focusing on assessing reproductive behaviour and early life history ecology of southern river blackfish (Gadopsis marmoratus) in the Gellibrand River Catchment, Victoria, Australia. This has involved building purpose-specific nest boxes and external monitoring cameras that will operate, store and send images while remaining underwater. While the technology is extremely promising, we present the significant benefits and challenges associated with construction and maintained operation of these devices in aquatic environments.